★The human brain uses about 20% of the body's total energy.★Banging your head against a wall for one hour burns 150 calories.★Sloths only poop about once a week.★Octopuses can taste with their arms.★Barbie's full name is Barbara Millicent Roberts.★Starfish can regenerate their lost limbs.★The inventor of the Pringles can is buried in one.★Tigers have striped skin, not just striped fur.★Bubble wrap was originally invented as wallpaper.★Ancient Egyptians slept on stone pillows.★Pineapples take about two years to grow.★Bananas are curved because they grow towards the sun.★A day on Mercury lasts 59 Earth days.★Scotland's national animal is the unicorn.★The fear of long words is ironically called hippopotomonstrosesquippedaliophobia.★A jiffy is an actual unit of time: 1/100th of a second.★Humans are the only animals that blush.★Bananas are berries, but strawberries are not.★A group of jellyfish is called a smack.★The first oranges weren't orange, they were green.★Chewing gum while you chop onions helps keep you from crying.★Ostriches can run faster than horses.★A day on Jupiter lasts only about 10 hours.★A hummingbird's heart can beat up to 1,260 times per minute.★Ketchup was once sold as medicine in the 1830s.★29th May is officially Put a Pillow on Your Fridge Day.★Nintendo was founded in 1889 as a playing card company.★A group of porcupines is called a prickle.★The longest recorded flight of a chicken lasted 13 seconds.★The Mona Lisa has no eyebrows or eyelashes.★A snail can have up to 25,000 teeth on its tongue.★Dragonflies have been around for about 300 million years.★The average person walks the equivalent of three times around the world in a lifetime.★So far, two diseases have successfully been eradicated: smallpox and rinderpest.★The longest hiccuping spree lasted 68 years.★Most 'silver' spoons are actually made of stainless steel.★A group of ferrets is called a business.★Polar bears have black skin under their white fur.★Rats laugh when tickled.★Cleopatra lived closer in time to the Moon landing than to the building of the Great Pyramid.★The Statue of Liberty was originally intended to be a lighthouse.★There is a village in Norway called 'Hell' that freezes over every winter.★An octopus has nine brains.★A group of crows mobbing a predator is literally called a 'murder patrol'.★A snail can sleep for three years straight.★A lion's roar can be heard from up to 5 miles away.★Dolphins sleep with one eye open.★A group of pandas is called an embarrassment.★Butterflies taste with their feet.★There are more stars in the universe than grains of sand on every beach on Earth.★The oldest 'your mom' joke was discovered on a 3,500 year old Babylonian tablet.★Your stomach gets a new lining every 3 to 4 days, otherwise it would digest itself.★The dot over the letter 'i' is called a tittle.★The shortest war in history lasted 38 to 45 minutes between Britain and Zanzibar.★Pteronophobia is the fear of being tickled by feathers.★Elephants are the only mammals that can't jump.★The first computer mouse was made of wood.★Goldfish can recognize human faces.★Cashews grow on the outside of a fruit, not inside a shell.★We have mapped more of Mars than of our own ocean floor.★A bolt of lightning is five times hotter than the surface of the sun.★Pigs can't look up at the sky without rolling over.★Dolphins have names for each other.★The smell of freshly cut grass is actually a plant distress signal.★The first item ever sold on eBay was a broken laser pointer.★Your nose can remember 50,000 different scents.★Octopuses have three hearts and blue blood.★The moon has moonquakes.★There are more than 1,000 chemicals in a cup of coffee.★Hippos can't actually swim, they walk along the riverbed.★A mosquito has 47 teeth.★The Great Wall of China is not visible from space with the naked eye.★The Hawaiian alphabet has only 13 letters.★Cats can't taste sweetness.★Peanuts aren't nuts, they are legumes.★The average person spends six months of their life waiting for red lights to turn green.★A shrimp's heart is located in its head.★Vincent van Gogh only sold one painting during his lifetime.★A cloud can weigh more than a million pounds.★The shortest commercial flight in the world lasts just 57 seconds.★The microwave oven was invented by accident when a researcher noticed a chocolate bar melted in his pocket.★Antarctica is the only continent without native reptiles or snakes.★A crocodile can't stick its tongue out.★A blue whale's heart is roughly the size of a small car.★Snakes can help predict earthquakes.★Horses physically cannot vomit.★Bees can recognize individual human faces.★Sea cucumbers breathe through their butts.★Honey never spoils. Archaeologists found 3000-year-old honey in Egyptian tombs that was still edible.★A 'jiffy' is one trillionth of a second in physics.★The French language has 13 different words for 'kiss'.★There are only two countries in the world whose names start with 'The': The Gambia and The Bahamas.★The Dutch were once the tallest people in the world.★Pigeons can recognize themselves in a mirror.★More than half of all people alive today have never made a phone call.★A flock of crows is known as a murder.★7% of American adults believe that chocolate milk comes from brown cows.★Cows have regional accents, they moo differently in different areas.★The smell of rain has a name: petrichor.★Voice actors for Mickey and Minnie Mouse got married in real life.★Koalas have fingerprints nearly identical to humans.★A blue whale's tongue can weigh as much as an elephant.★Humans share 60% of their DNA with bananas.★Sea otters hold hands while sleeping so they don't drift apart.★A group of flamingos is called a 'flamboyance'.★Sloths can hold their breath longer than dolphins can.★Cherophobia is an irrational fear of fun or happiness.★There are more possible iterations of a game of chess than atoms in the observable universe.★Crows can recognize human faces and hold grudges for years.★A 'moment' was medieval unit of time equal to 90 seconds.★A day on Venus is longer than a year on Venus.★It is physically impossible to hum while holding your nose.★Avocados are toxic to most animals except humans.★Humans blink about 15 to 20 times per minute.★There's a species of jellyfish that is immortal.★A hippo's sweat is pink.★Google processes more than 8.5 billion searches every single day.★Cows have best friends and get stressed when separated.★Cotton candy was co-invented by a dentist.★A group of owls is called a parliament.★A group of frogs is called an army.★A rhinoceros' horn is made of keratin, the same stuff as hair.★Hot water freezes faster than cold water. This is called the Mpemba effect.★The 'new car smell' is made of dozens of chemicals off-gassing from the interior.★Wombat poop is cube-shaped.★If you lift a kangaroo's tail off the ground it can't hop.★Your tongue print is as unique as your fingerprint.★The world's oldest known recipe is for beer.★A newborn kangaroo is about the size of a jellybean.★It takes about eight minutes for sunlight to reach Earth.★The Eiffel Tower can grow up to 6 inches taller during summer.★Saturn would float if you could find an ocean big enough.★A newborn panda is smaller than a mouse.★Sharks existed on Earth before trees did.★You can hear a blue whale's heartbeat from more than two miles away.★In Switzerland it is illegal to own just one guinea pig.

★The human brain uses about 20% of the body's total energy.★Banging your head against a wall for one hour burns 150 calories.★Sloths only poop about once a week.★Octopuses can taste with their arms.★Barbie's full name is Barbara Millicent Roberts.★Starfish can regenerate their lost limbs.★The inventor of the Pringles can is buried in one.★Tigers have striped skin, not just striped fur.★Bubble wrap was originally invented as wallpaper.★Ancient Egyptians slept on stone pillows.★Pineapples take about two years to grow.★Bananas are curved because they grow towards the sun.★A day on Mercury lasts 59 Earth days.★Scotland's national animal is the unicorn.★The fear of long words is ironically called hippopotomonstrosesquippedaliophobia.★A jiffy is an actual unit of time: 1/100th of a second.★Humans are the only animals that blush.★Bananas are berries, but strawberries are not.★A group of jellyfish is called a smack.★The first oranges weren't orange, they were green.★Chewing gum while you chop onions helps keep you from crying.★Ostriches can run faster than horses.★A day on Jupiter lasts only about 10 hours.★A hummingbird's heart can beat up to 1,260 times per minute.★Ketchup was once sold as medicine in the 1830s.★29th May is officially Put a Pillow on Your Fridge Day.★Nintendo was founded in 1889 as a playing card company.★A group of porcupines is called a prickle.★The longest recorded flight of a chicken lasted 13 seconds.★The Mona Lisa has no eyebrows or eyelashes.★A snail can have up to 25,000 teeth on its tongue.★Dragonflies have been around for about 300 million years.★The average person walks the equivalent of three times around the world in a lifetime.★So far, two diseases have successfully been eradicated: smallpox and rinderpest.★The longest hiccuping spree lasted 68 years.★Most 'silver' spoons are actually made of stainless steel.★A group of ferrets is called a business.★Polar bears have black skin under their white fur.★Rats laugh when tickled.★Cleopatra lived closer in time to the Moon landing than to the building of the Great Pyramid.★The Statue of Liberty was originally intended to be a lighthouse.★There is a village in Norway called 'Hell' that freezes over every winter.★An octopus has nine brains.★A group of crows mobbing a predator is literally called a 'murder patrol'.★A snail can sleep for three years straight.★A lion's roar can be heard from up to 5 miles away.★Dolphins sleep with one eye open.★A group of pandas is called an embarrassment.★Butterflies taste with their feet.★There are more stars in the universe than grains of sand on every beach on Earth.★The oldest 'your mom' joke was discovered on a 3,500 year old Babylonian tablet.★Your stomach gets a new lining every 3 to 4 days, otherwise it would digest itself.★The dot over the letter 'i' is called a tittle.★The shortest war in history lasted 38 to 45 minutes between Britain and Zanzibar.★Pteronophobia is the fear of being tickled by feathers.★Elephants are the only mammals that can't jump.★The first computer mouse was made of wood.★Goldfish can recognize human faces.★Cashews grow on the outside of a fruit, not inside a shell.★We have mapped more of Mars than of our own ocean floor.★A bolt of lightning is five times hotter than the surface of the sun.★Pigs can't look up at the sky without rolling over.★Dolphins have names for each other.★The smell of freshly cut grass is actually a plant distress signal.★The first item ever sold on eBay was a broken laser pointer.★Your nose can remember 50,000 different scents.★Octopuses have three hearts and blue blood.★The moon has moonquakes.★There are more than 1,000 chemicals in a cup of coffee.★Hippos can't actually swim, they walk along the riverbed.★A mosquito has 47 teeth.★The Great Wall of China is not visible from space with the naked eye.★The Hawaiian alphabet has only 13 letters.★Cats can't taste sweetness.★Peanuts aren't nuts, they are legumes.★The average person spends six months of their life waiting for red lights to turn green.★A shrimp's heart is located in its head.★Vincent van Gogh only sold one painting during his lifetime.★A cloud can weigh more than a million pounds.★The shortest commercial flight in the world lasts just 57 seconds.★The microwave oven was invented by accident when a researcher noticed a chocolate bar melted in his pocket.★Antarctica is the only continent without native reptiles or snakes.★A crocodile can't stick its tongue out.★A blue whale's heart is roughly the size of a small car.★Snakes can help predict earthquakes.★Horses physically cannot vomit.★Bees can recognize individual human faces.★Sea cucumbers breathe through their butts.★Honey never spoils. Archaeologists found 3000-year-old honey in Egyptian tombs that was still edible.★A 'jiffy' is one trillionth of a second in physics.★The French language has 13 different words for 'kiss'.★There are only two countries in the world whose names start with 'The': The Gambia and The Bahamas.★The Dutch were once the tallest people in the world.★Pigeons can recognize themselves in a mirror.★More than half of all people alive today have never made a phone call.★A flock of crows is known as a murder.★7% of American adults believe that chocolate milk comes from brown cows.★Cows have regional accents, they moo differently in different areas.★The smell of rain has a name: petrichor.★Voice actors for Mickey and Minnie Mouse got married in real life.★Koalas have fingerprints nearly identical to humans.★A blue whale's tongue can weigh as much as an elephant.★Humans share 60% of their DNA with bananas.★Sea otters hold hands while sleeping so they don't drift apart.★A group of flamingos is called a 'flamboyance'.★Sloths can hold their breath longer than dolphins can.★Cherophobia is an irrational fear of fun or happiness.★There are more possible iterations of a game of chess than atoms in the observable universe.★Crows can recognize human faces and hold grudges for years.★A 'moment' was medieval unit of time equal to 90 seconds.★A day on Venus is longer than a year on Venus.★It is physically impossible to hum while holding your nose.★Avocados are toxic to most animals except humans.★Humans blink about 15 to 20 times per minute.★There's a species of jellyfish that is immortal.★A hippo's sweat is pink.★Google processes more than 8.5 billion searches every single day.★Cows have best friends and get stressed when separated.★Cotton candy was co-invented by a dentist.★A group of owls is called a parliament.★A group of frogs is called an army.★A rhinoceros' horn is made of keratin, the same stuff as hair.★Hot water freezes faster than cold water. This is called the Mpemba effect.★The 'new car smell' is made of dozens of chemicals off-gassing from the interior.★Wombat poop is cube-shaped.★If you lift a kangaroo's tail off the ground it can't hop.★Your tongue print is as unique as your fingerprint.★The world's oldest known recipe is for beer.★A newborn kangaroo is about the size of a jellybean.★It takes about eight minutes for sunlight to reach Earth.★The Eiffel Tower can grow up to 6 inches taller during summer.★Saturn would float if you could find an ocean big enough.★A newborn panda is smaller than a mouse.★Sharks existed on Earth before trees did.★You can hear a blue whale's heartbeat from more than two miles away.★In Switzerland it is illegal to own just one guinea pig.

Duo gunners

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Duo gunners

Co-op run and gun. Blast through the waves and beat the boss. Grab spread and rapid fire crates along the way.

How to play Duo gunners

Duo gunners is a two-player co-op run and gun, also playable solo. Each player runs, jumps and shoots through waves of enemies toward a boss. Use your movement keys to run and jump and your fire key to shoot. Grab power-ups like spread and rapid fire to boost your blaster. Work together to cover both sides of the screen, revive the pressure on tough enemies, and survive each wave. Clear all the waves and take down the boss to win the round.

Tips

Split the screen, one player covers the front, the other the back
Share power-ups, a spread gun on each side clears waves twice as fast
Keep moving so enemy fire cannot pin you in a corner
Focus the boss together once the last wave is clear

About Duo gunners

Duo gunners is made for couch co-op, the kind of side by side blasting that arcade cabinets did best. Two gunners, endless waves and a boss at the end, with rapid fire and spread pickups to keep the screen full of bullets. Grab a friend on one keyboard or play it solo, free and in the browser.

More reflex games

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Aim trainer: Click as many targets as you can in 30 seconds.
Reaction time: How fast can you click when the screen turns green?
Whack a mole: Bonk the moles before they pop back into their holes.
Stroop test: Read the colour, ignore the word. Brain twister in 30 seconds.

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